My Lenovo T410. It has an i5 2.4 GHz CPU, 4 GB RAM, and a 230 GB HD. Everything works out of the box with OpenBSD 6.0/amd. I installed OpenBSD with cat5 and DHCP. The wireless firmware installed after the first reboot.

Dell Latitude E6400
I've been using it as guinea pig. Differences from "stock" model:
- Bluetooth mPCIe replaced by Lenovo F5521GW UMTS modem (curiosity, It does not seem to function as a modem in this slot though),
- added UMTS modem Dell DW5570 (originally meant for different model)
- original HDD replaced by old Intel 160GB SATA SSD.

What works: Wifi (after I downloaded necessary firmware)Suspend/Resume (my 1y old toddler opened-closed laptop's lid like a hundred times in a row, going into resume and coming out of it continued working perfectly)Graphics - works out of the box.Built-in SD card reader

Haven't tested yet -
Built-in smartcard reader:
DW5570 (I believe it would work, I lack the SIM card for testing but ifconfig is showing the following

Here's my OpenBSD Thinkpad W520 with Intel Quad Core i7-2760QM @ 2.40GHz, 8GB RAM, and NVIDIA Quadro 1000M with 96 CUDA cores and Optimus Technology. Where I had to work to get Optimus lined out on FreeBSD, OpenBSD handled it with no problem: